opendaylight/config/config-persister-feature-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/FeatureServiceCustomizer.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.configpusherfeature.internal;
   9
  10 import org.apache.karaf.features.FeaturesListener;
  11 import org.apache.karaf.features.FeaturesService;
  12 import org.opendaylight.controller.config.persist.api.ConfigPusher;
  13 import org.osgi.framework.BundleContext;
  14 import org.osgi.framework.ServiceReference;
  15 import org.osgi.framework.ServiceRegistration;
  16 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  17
  18 public class FeatureServiceCustomizer implements ServiceTrackerCustomizer<FeaturesService, FeaturesService>, AutoCloseable {
  19     private ConfigPusher configPusher = null;
  20     private ConfigFeaturesListener configFeaturesListener = null;
  21     private ServiceRegistration<?> registration;
  22
  23     FeatureServiceCustomizer(ConfigPusher c) {
  24         configPusher = c;
  25     }
  26
  27
  28     @Override
  29     public FeaturesService addingService(ServiceReference<FeaturesService> reference) {
  30         BundleContext bc = reference.getBundle().getBundleContext();
  31         FeaturesService featureService = bc.getService(reference);
  32         configFeaturesListener = new ConfigFeaturesListener(configPusher,featureService);
  33         registration = bc.registerService(FeaturesListener.class.getCanonicalName(), configFeaturesListener, null);
  34         return featureService;
  35     }
  36
  37     @Override
  38     public void modifiedService(ServiceReference<FeaturesService> reference,
  39             FeaturesService service) {
  40         // we don't care if the properties change
  41
  42     }
  43
  44     @Override
  45     public void removedService(ServiceReference<FeaturesService> reference,
  46             FeaturesService service) {
  47         close();
  48     }
  49
  50     @Override
  51     public void close() {
  52         if(registration != null) {
  53             registration.unregister();
  54             registration = null;
  55         }
  56     }
  57
  58 }